Sectional gear.



No. 762,225. PATENTED JUNE 7, 1904.

T. 1". BEGKETT. SEGTIONAL GEAR.

APPLICATION FILED OUT-17, 1903.

NO MODEL.

UNITED STATES Patented. June '7', 1904.

PATENT OFFICE.

SECTIONAL GEAR.

SPECIFICATION forming part of Letters Patent'No. 762,225, dated J lin '7, 1904.

Application filed October 17, 1203. Serial No. 177,453- (No model.)

To aZZ whom it may concern:

Be it known that I, THoMAs F. BEOKETT, a citizen of the United States, residing at Steubenville, in the county of Jefferson and State of Ohio, have invented new and useful Improvements in Sectional Gears, of which the following is a specification.

My invention relates to new and useful improvements in sectional gears especially adapted for use upon large shafts; and its object is to provide a gear which can be readily taken apart, thereby permitting it to be easily removed from a shaft without the necessity of displacing, one or more of the shaft-bearings.

A further object is to construct the sections of the gear in a novel manner whereby the parts will be held rigidly together.

WVith the above and other objects in view the invention consists in the further novel construction, combination, and arrangement of the several parts, which will be more fully hereinafter described and claimed, and illustrated in the accompanying drawings, and in which- Figure l is a side elevation of a gear constructed in accordance with my invention. Fig. 2 is an elevation of the other side of the gear. Fig. 3 is a section on line 3 3, Fig. 2; and Fig. 4: is a section on line 4: 4, Fig. 2.

Referring to the figures bynumerals of reference, 1 is a semicylindrical section having a dovetail groove 2 in each face thereof and extending inwardly from the straight edge of the section. These grooves are arranged at one side of the semicircular recess 3, formed in the center of the straight edge of the section, and at an equal distance from said recess, at the other side thereof, are arranged parallel laterally-extending tongues 4, the areas and proportions of which are equal to those of the grooves 2, before referred to. The section 1 also has a longitudinally extending rib 5, which is centrally arranged along the straight edge thereof. Another section, 6, is provided which is exactly similar to the section 1, before referred to, with the exception that a groove 7 is formed in its straight edge and is adapted to receive the rib 5, above referred to. The tongues 8 of this section 6 are adapted to project into and engage the walls of the form, and in the drawings I have shown beveled teeth 11 arranged thereon. The aperture formed of the recesses 3 of the two sections is adapted to receive a shaft, and the sections may be fastened to the shaft by inserting a suitable key into the groove 12, formed in the walls of the recesses 3. After a shaft has been placed in position and it is desired to place the gear thereon it is merely necessary to remove the bolts 10 and then draw the two sections apart. These sections can then be placed at opposite sides of the shaft and the tongues 4: and 8 inserted into their respective grooves 9 and 2. After the two sections have been brought together the bolts 10 are inserted through the tongues 4 and 8 and fastened in position, and it is then impossible to detach the gear without reversing the operation. This device is especially adapted for use where a large number of gears are mounted upon a long shaft and where considerable difficulty and inconvenience would be experienced in removing and replacing a gear centrally arranged upon the shaft.

While I have shown and described a gear constructed in this manner, it will of course be understood that I do not restrict myself to this particular device, for, if desired, apulley or other device may be constructed in the same manner.

In the foregoing description I have shown the preferred form of my invention; butI do not limit myself thereto, as I am aware that modifications may be made therein without departing from the spirit or sacrificing the advantages thereof, and I therefore reserve the right to make such changes and alterations as may fairly fall within the scope of my invention.

Having thus described my invention, what I claim as new, and desire to secure byLetters Patent, is

1. A device of the character described com- 3. A device of the character described comprising oppositely-arranged sections having registering recesses in their adjoining faces, parallel tongues extending from the inner face of each section and adapted to be seated in dovetail grooves in the opposite section,

means for securing the tongues Within the grooves, and a bead Within one of the sections seated Within the groove in the other section.

at. A device of the character described comprising oppositely-disposed sections having registering recesses to form a shaft-opening, oppositely-extending parallel tongues integral with the sections and seated Within dovetail grooves in the oppositely-disposed sections, transversely-extending bolts Within the tongues and section adapted to secure the tongues Within the grooves, and a rib upon one of the sections engaging the other section. In testimony Whereof l aflix my signature in presence of two Witnesses.

THOMAS F. BECKETT. WVitnesses O. F. Soorr, WI H. CRAIG. 

